Streamlight's NightFighter LED is a multi-function light that can be used with or without its finger-grip ring and has both constant and momentary "on" settings. The tail cap is recessed just enough to prevent you from accidentally hitting the light when you don't want to, but sticks out enough so you can use most any light technique of your choosing with it. One feature that sets the NightFighter apart is its anti-roll head. The bezel has three large flats that keep the light from rolling off of a vehicle's hood or any but the steepest-angled surfaces.